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  • Knowing what type of COVID test you need to diagnose COVID-19—and when to take it—is confusing. Get an overview of COVID diagnostic tests, including rapid (antigen) tests, molecular tests, the best type of COVID test to take after you're exposed, and when to take a 2nd COVID test.
  • Find out how obesity is thought to worsen COVID-19, the connection between obesity, diabetes and COVID-19, and steps to take now if your BMI is a COVID risk factor.
  • So far, confirmed COVID-19 reinfections are rare, but there are many anecdotal accounts of getting COVID a second time. Learn what's known so far from COVID reinfection studies and how doctors confirm a COVID reinfection.